Bastos Natália Almeida, Bitencourt Sandro Basso, Carneiro Renan Figueiredo, Ferrairo Brunna Mota, Strelhow Samira Sandy Ferreira, Dos Santos Daniela Micheline, Bombonatti Juliana Fraga Soares
Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, Brazil.
Department of Dental Materials and Prosthodontics, Sao Paulo State University (UNESP), School of Dentistry, Araçatuba, Sao Paulo, Brazil.
J Indian Prosthodont Soc. 2020 Oct-Dec;20(4):338-344. doi: 10.4103/jips.jips_112_20. Epub 2020 Oct 8.
The aim of this meta analysis was to evaluate the influence of the processing method on the marginal and internal gaps of lithium disilicate inlays/onlays.
A systematic literature review was conducted using the PubMed/Medline, Embase, Scopus, and Cochrane Library databases. This review was registered on the PROSPERO platform.
The studies were selected according to the marginal and internal gaps of two different fabrication methods for lithium disilicate (milled and pressed).
The meta analysis was performed based on the Mantel-Haenszel and inverse variance methods, using the random effects model and a 95% confidence interval.
From all databases, 127 studies were identified. Four in vitro studies were included in the qualitative analysis and three in the meta analysis. Moreover, 197 restorations were evaluated (103 pressed and 94 milled). During the evaluation of only the internal gap, there was a statistically significant difference favoring the pressed technique ( = 0.002). There was no statistically significant difference in the analyses of the marginal gap ( = 0.530) and the total gap ( = 0.450).
Both the techniques provided acceptable marginal and total gaps, although the pressed technique revealed a more favorable internal adaptation than the milled onlays/inlays.
本荟萃分析的目的是评估加工方法对二硅酸锂嵌体/高嵌体边缘及内部间隙的影响。
使用PubMed/Medline、Embase、Scopus和Cochrane图书馆数据库进行系统的文献综述。该综述已在PROSPERO平台注册。
根据两种不同的二硅酸锂制作方法（铣削和压制）的边缘及内部间隙来选择研究。
基于Mantel-Haenszel法和逆方差法进行荟萃分析，采用随机效应模型和95%置信区间。
从所有数据库中识别出127项研究。4项体外研究纳入定性分析，3项纳入荟萃分析。此外，共评估了197个修复体（103个压制的和94个铣削的）。仅在评估内部间隙时，压制技术具有统计学显著优势（P = 0.002）。在边缘间隙（P = 0.530）和总间隙（P = 0.450）分析中无统计学显著差异。
两种技术均能提供可接受的边缘和总间隙，尽管压制技术在内部适应性方面比铣削嵌体/高嵌体更具优势。
